./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:36:22,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:36:22,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:36:22,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:36:22,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:36:22,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:36:22,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:36:22,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:36:22,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:36:22,342 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:36:22,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:36:22,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:36:22,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:36:22,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:36:22,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:36:22,344 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:36:22,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:36:22,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:36:22,345 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2025-02-06 04:36:22,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:36:22,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:36:22,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:36:22,582 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:36:22,583 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:36:22,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2025-02-06 04:36:23,751 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f3f420779/e5129ec63da647cebe6147124acb9ffb/FLAG8864e8d41 [2025-02-06 04:36:24,039 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:36:24,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2025-02-06 04:36:24,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f3f420779/e5129ec63da647cebe6147124acb9ffb/FLAG8864e8d41 [2025-02-06 04:36:24,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f3f420779/e5129ec63da647cebe6147124acb9ffb [2025-02-06 04:36:24,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:36:24,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:36:24,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:36:24,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:36:24,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:36:24,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b429eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24, skipping insertion in model container [2025-02-06 04:36:24,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:36:24,470 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2642,2655] [2025-02-06 04:36:24,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:36:24,489 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:36:24,512 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2642,2655] [2025-02-06 04:36:24,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:36:24,530 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:36:24,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24 WrapperNode [2025-02-06 04:36:24,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:36:24,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:36:24,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:36:24,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:36:24,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,561 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117 [2025-02-06 04:36:24,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:36:24,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:36:24,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:36:24,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:36:24,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,590 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 04:36:24,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,595 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:36:24,607 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:36:24,609 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:36:24,609 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:36:24,610 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (1/1) ... [2025-02-06 04:36:24,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:36:24,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:24,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:36:24,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:36:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:36:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:36:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:36:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:36:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:36:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:36:24,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:36:24,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:36:24,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:36:24,654 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:36:24,747 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:36:24,749 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:36:24,987 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:36:24,987 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:36:25,135 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:36:25,135 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:36:25,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:36:25 BoogieIcfgContainer [2025-02-06 04:36:25,136 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:36:25,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:36:25,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:36:25,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:36:25,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:36:24" (1/3) ... [2025-02-06 04:36:25,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42384a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:36:25, skipping insertion in model container [2025-02-06 04:36:25,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:36:24" (2/3) ... [2025-02-06 04:36:25,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42384a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:36:25, skipping insertion in model container [2025-02-06 04:36:25,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:36:25" (3/3) ... [2025-02-06 04:36:25,143 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2025-02-06 04:36:25,154 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:36:25,155 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-min-max-1.wvr.c that has 4 procedures, 51 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-06 04:36:25,155 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:36:25,201 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:36:25,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 131 flow [2025-02-06 04:36:25,256 INFO L124 PetriNetUnfolderBase]: 5/52 cut-off events. [2025-02-06 04:36:25,262 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:36:25,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 5/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-06 04:36:25,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 131 flow [2025-02-06 04:36:25,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 120 flow [2025-02-06 04:36:25,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:36:25,280 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ed7ad50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:36:25,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:36:25,292 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:36:25,292 INFO L124 PetriNetUnfolderBase]: 5/50 cut-off events. [2025-02-06 04:36:25,292 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:36:25,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:25,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:25,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:25,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash 475076644, now seen corresponding path program 1 times [2025-02-06 04:36:25,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:25,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642436801] [2025-02-06 04:36:25,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:25,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:25,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 04:36:25,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 04:36:25,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:25,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:36:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642436801] [2025-02-06 04:36:25,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642436801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:25,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:25,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:36:25,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468321999] [2025-02-06 04:36:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:25,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:25,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:25,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:25,650 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 55 [2025-02-06 04:36:25,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:25,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:25,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 55 [2025-02-06 04:36:25,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:26,138 INFO L124 PetriNetUnfolderBase]: 2431/3483 cut-off events. [2025-02-06 04:36:26,139 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2025-02-06 04:36:26,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7223 conditions, 3483 events. 2431/3483 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16001 event pairs, 1290 based on Foata normal form. 0/2908 useless extension candidates. Maximal degree in co-relation 6906. Up to 2363 conditions per place. [2025-02-06 04:36:26,165 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 63 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2025-02-06 04:36:26,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 298 flow [2025-02-06 04:36:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-02-06 04:36:26,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-06 04:36:26,180 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 120 flow. Second operand 4 states and 99 transitions. [2025-02-06 04:36:26,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 298 flow [2025-02-06 04:36:26,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 282 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:36:26,189 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 122 flow [2025-02-06 04:36:26,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2025-02-06 04:36:26,195 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2025-02-06 04:36:26,196 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 122 flow [2025-02-06 04:36:26,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:26,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:26,198 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:26,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:36:26,198 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:26,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:26,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1727660416, now seen corresponding path program 1 times [2025-02-06 04:36:26,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:26,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34036636] [2025-02-06 04:36:26,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:26,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:26,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 04:36:26,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 04:36:26,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:26,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:26,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34036636] [2025-02-06 04:36:26,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34036636] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:26,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:26,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:36:26,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39748862] [2025-02-06 04:36:26,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:26,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:26,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:26,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:26,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 55 [2025-02-06 04:36:26,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:26,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:26,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 55 [2025-02-06 04:36:26,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:26,682 INFO L124 PetriNetUnfolderBase]: 3152/4521 cut-off events. [2025-02-06 04:36:26,682 INFO L125 PetriNetUnfolderBase]: For 192/285 co-relation queries the response was YES. [2025-02-06 04:36:26,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9613 conditions, 4521 events. 3152/4521 cut-off events. For 192/285 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 21309 event pairs, 1744 based on Foata normal form. 93/4075 useless extension candidates. Maximal degree in co-relation 2816. Up to 3097 conditions per place. [2025-02-06 04:36:26,702 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 66 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-02-06 04:36:26,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 313 flow [2025-02-06 04:36:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2025-02-06 04:36:26,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-02-06 04:36:26,703 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 122 flow. Second operand 4 states and 100 transitions. [2025-02-06 04:36:26,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 313 flow [2025-02-06 04:36:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:36:26,705 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 132 flow [2025-02-06 04:36:26,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2025-02-06 04:36:26,706 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2025-02-06 04:36:26,706 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 132 flow [2025-02-06 04:36:26,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:26,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:26,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:26,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:36:26,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:26,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -788331397, now seen corresponding path program 1 times [2025-02-06 04:36:26,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:26,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592610064] [2025-02-06 04:36:26,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:26,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 04:36:26,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 04:36:26,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:26,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:26,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592610064] [2025-02-06 04:36:26,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592610064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:26,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:26,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:36:26,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006362093] [2025-02-06 04:36:26,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:26,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:36:26,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:26,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:36:26,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:36:26,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 55 [2025-02-06 04:36:26,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:26,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:26,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 55 [2025-02-06 04:36:26,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:27,089 INFO L124 PetriNetUnfolderBase]: 2930/4214 cut-off events. [2025-02-06 04:36:27,089 INFO L125 PetriNetUnfolderBase]: For 203/380 co-relation queries the response was YES. [2025-02-06 04:36:27,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9241 conditions, 4214 events. 2930/4214 cut-off events. For 203/380 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19379 event pairs, 2338 based on Foata normal form. 177/3957 useless extension candidates. Maximal degree in co-relation 2769. Up to 4155 conditions per place. [2025-02-06 04:36:27,107 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 45 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2025-02-06 04:36:27,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 230 flow [2025-02-06 04:36:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:36:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:36:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-06 04:36:27,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37727272727272726 [2025-02-06 04:36:27,109 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 132 flow. Second operand 4 states and 83 transitions. [2025-02-06 04:36:27,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 230 flow [2025-02-06 04:36:27,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:36:27,111 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 142 flow [2025-02-06 04:36:27,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2025-02-06 04:36:27,111 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2025-02-06 04:36:27,111 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 142 flow [2025-02-06 04:36:27,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:27,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:27,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:27,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:36:27,112 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:27,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:27,113 INFO L85 PathProgramCache]: Analyzing trace with hash -760508093, now seen corresponding path program 1 times [2025-02-06 04:36:27,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:27,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770121601] [2025-02-06 04:36:27,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:27,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:27,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 04:36:27,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 04:36:27,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:27,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:27,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:27,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770121601] [2025-02-06 04:36:27,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770121601] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:27,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:27,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:36:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076361848] [2025-02-06 04:36:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:27,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:36:27,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:27,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:36:27,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:36:27,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2025-02-06 04:36:27,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:27,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:27,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2025-02-06 04:36:27,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:28,383 INFO L124 PetriNetUnfolderBase]: 8081/11550 cut-off events. [2025-02-06 04:36:28,384 INFO L125 PetriNetUnfolderBase]: For 1281/1602 co-relation queries the response was YES. [2025-02-06 04:36:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25494 conditions, 11550 events. 8081/11550 cut-off events. For 1281/1602 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 60260 event pairs, 1170 based on Foata normal form. 324/10822 useless extension candidates. Maximal degree in co-relation 25456. Up to 2512 conditions per place. [2025-02-06 04:36:28,420 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 129 selfloop transitions, 18 changer transitions 116/267 dead transitions. [2025-02-06 04:36:28,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 267 transitions, 1214 flow [2025-02-06 04:36:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 04:36:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 04:36:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 359 transitions. [2025-02-06 04:36:28,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40795454545454546 [2025-02-06 04:36:28,424 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 142 flow. Second operand 16 states and 359 transitions. [2025-02-06 04:36:28,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 267 transitions, 1214 flow [2025-02-06 04:36:28,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 267 transitions, 1208 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 04:36:28,428 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 247 flow [2025-02-06 04:36:28,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=247, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2025-02-06 04:36:28,428 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2025-02-06 04:36:28,429 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 247 flow [2025-02-06 04:36:28,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:28,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:28,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:28,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:36:28,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:28,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1085841141, now seen corresponding path program 1 times [2025-02-06 04:36:28,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:28,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080116498] [2025-02-06 04:36:28,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:28,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:28,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 04:36:28,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 04:36:28,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:28,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:28,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:28,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080116498] [2025-02-06 04:36:28,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080116498] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:28,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:28,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 04:36:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814303228] [2025-02-06 04:36:28,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:28,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:36:28,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:28,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:36:28,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:36:28,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 55 [2025-02-06 04:36:28,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 247 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:28,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:28,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 55 [2025-02-06 04:36:28,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:30,125 INFO L124 PetriNetUnfolderBase]: 7953/11468 cut-off events. [2025-02-06 04:36:30,126 INFO L125 PetriNetUnfolderBase]: For 11019/11181 co-relation queries the response was YES. [2025-02-06 04:36:30,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31398 conditions, 11468 events. 7953/11468 cut-off events. For 11019/11181 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 58739 event pairs, 1141 based on Foata normal form. 159/10549 useless extension candidates. Maximal degree in co-relation 31366. Up to 3685 conditions per place. [2025-02-06 04:36:30,163 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 202 selfloop transitions, 40 changer transitions 104/349 dead transitions. [2025-02-06 04:36:30,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 349 transitions, 1842 flow [2025-02-06 04:36:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 04:36:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-06 04:36:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 471 transitions. [2025-02-06 04:36:30,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3568181818181818 [2025-02-06 04:36:30,166 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 247 flow. Second operand 24 states and 471 transitions. [2025-02-06 04:36:30,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 349 transitions, 1842 flow [2025-02-06 04:36:30,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 349 transitions, 1796 flow, removed 22 selfloop flow, removed 5 redundant places. [2025-02-06 04:36:30,236 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 492 flow [2025-02-06 04:36:30,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=492, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2025-02-06 04:36:30,237 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2025-02-06 04:36:30,237 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 492 flow [2025-02-06 04:36:30,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:30,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:30,238 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:30,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:36:30,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:30,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash -309623990, now seen corresponding path program 1 times [2025-02-06 04:36:30,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:30,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538167670] [2025-02-06 04:36:30,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:30,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:30,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 04:36:30,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 04:36:30,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:30,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:36:30,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:30,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538167670] [2025-02-06 04:36:30,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538167670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:30,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:30,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 04:36:30,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550290652] [2025-02-06 04:36:30,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:30,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:36:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:30,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:36:30,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:36:30,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 55 [2025-02-06 04:36:30,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 492 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:30,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:30,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 55 [2025-02-06 04:36:30,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:32,132 INFO L124 PetriNetUnfolderBase]: 9743/14073 cut-off events. [2025-02-06 04:36:32,133 INFO L125 PetriNetUnfolderBase]: For 33568/33760 co-relation queries the response was YES. [2025-02-06 04:36:32,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45455 conditions, 14073 events. 9743/14073 cut-off events. For 33568/33760 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 75425 event pairs, 1310 based on Foata normal form. 188/13559 useless extension candidates. Maximal degree in co-relation 45407. Up to 4567 conditions per place. [2025-02-06 04:36:32,190 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 225 selfloop transitions, 50 changer transitions 121/399 dead transitions. [2025-02-06 04:36:32,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 399 transitions, 2468 flow [2025-02-06 04:36:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 04:36:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-06 04:36:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 512 transitions. [2025-02-06 04:36:32,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35804195804195804 [2025-02-06 04:36:32,192 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 492 flow. Second operand 26 states and 512 transitions. [2025-02-06 04:36:32,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 399 transitions, 2468 flow [2025-02-06 04:36:32,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 399 transitions, 2379 flow, removed 23 selfloop flow, removed 10 redundant places. [2025-02-06 04:36:32,303 INFO L231 Difference]: Finished difference. Result has 125 places, 120 transitions, 738 flow [2025-02-06 04:36:32,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=738, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2025-02-06 04:36:32,304 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2025-02-06 04:36:32,305 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 738 flow [2025-02-06 04:36:32,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:32,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:32,305 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:32,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:36:32,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:32,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -897483074, now seen corresponding path program 2 times [2025-02-06 04:36:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009711404] [2025-02-06 04:36:32,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:36:32,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:32,316 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-06 04:36:32,407 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 43 of 48 statements. [2025-02-06 04:36:32,407 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:36:32,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:36:32,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009711404] [2025-02-06 04:36:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009711404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:36:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157588681] [2025-02-06 04:36:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:36:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:32,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:36:32,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:36:32,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2025-02-06 04:36:32,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 738 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:32,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:32,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2025-02-06 04:36:32,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:33,357 INFO L124 PetriNetUnfolderBase]: 5025/7377 cut-off events. [2025-02-06 04:36:33,361 INFO L125 PetriNetUnfolderBase]: For 37148/37272 co-relation queries the response was YES. [2025-02-06 04:36:33,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28579 conditions, 7377 events. 5025/7377 cut-off events. For 37148/37272 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 36340 event pairs, 1057 based on Foata normal form. 269/7637 useless extension candidates. Maximal degree in co-relation 28531. Up to 4117 conditions per place. [2025-02-06 04:36:33,462 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 154 selfloop transitions, 32 changer transitions 0/196 dead transitions. [2025-02-06 04:36:33,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 196 transitions, 1549 flow [2025-02-06 04:36:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:36:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:36:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2025-02-06 04:36:33,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3886363636363636 [2025-02-06 04:36:33,464 INFO L175 Difference]: Start difference. First operand has 125 places, 120 transitions, 738 flow. Second operand 8 states and 171 transitions. [2025-02-06 04:36:33,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 196 transitions, 1549 flow [2025-02-06 04:36:33,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 196 transitions, 1453 flow, removed 25 selfloop flow, removed 12 redundant places. [2025-02-06 04:36:33,545 INFO L231 Difference]: Finished difference. Result has 114 places, 120 transitions, 757 flow [2025-02-06 04:36:33,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=757, PETRI_PLACES=114, PETRI_TRANSITIONS=120} [2025-02-06 04:36:33,546 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2025-02-06 04:36:33,546 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 120 transitions, 757 flow [2025-02-06 04:36:33,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:33,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:33,546 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:33,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:36:33,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:33,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 916599256, now seen corresponding path program 1 times [2025-02-06 04:36:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641442532] [2025-02-06 04:36:33,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:36:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:33,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:36:33,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:36:33,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:36:33,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:33,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:33,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641442532] [2025-02-06 04:36:33,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641442532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:33,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:33,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-06 04:36:33,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468907370] [2025-02-06 04:36:33,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:33,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:36:33,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:33,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:36:33,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:36:33,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 55 [2025-02-06 04:36:33,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 757 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:33,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:33,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 55 [2025-02-06 04:36:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:35,694 INFO L124 PetriNetUnfolderBase]: 7013/10228 cut-off events. [2025-02-06 04:36:35,694 INFO L125 PetriNetUnfolderBase]: For 53704/53725 co-relation queries the response was YES. [2025-02-06 04:36:35,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41279 conditions, 10228 events. 7013/10228 cut-off events. For 53704/53725 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 51484 event pairs, 823 based on Foata normal form. 9/10237 useless extension candidates. Maximal degree in co-relation 41205. Up to 4402 conditions per place. [2025-02-06 04:36:35,744 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 234 selfloop transitions, 77 changer transitions 128/441 dead transitions. [2025-02-06 04:36:35,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 441 transitions, 3392 flow [2025-02-06 04:36:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 04:36:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-06 04:36:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 571 transitions. [2025-02-06 04:36:35,748 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2805896805896806 [2025-02-06 04:36:35,748 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 757 flow. Second operand 37 states and 571 transitions. [2025-02-06 04:36:35,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 441 transitions, 3392 flow [2025-02-06 04:36:35,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 441 transitions, 3292 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-02-06 04:36:35,852 INFO L231 Difference]: Finished difference. Result has 160 places, 151 transitions, 1229 flow [2025-02-06 04:36:35,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1229, PETRI_PLACES=160, PETRI_TRANSITIONS=151} [2025-02-06 04:36:35,855 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 104 predicate places. [2025-02-06 04:36:35,855 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 151 transitions, 1229 flow [2025-02-06 04:36:35,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:35,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:35,855 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:35,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:36:35,855 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:35,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -53841748, now seen corresponding path program 2 times [2025-02-06 04:36:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:35,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711637284] [2025-02-06 04:36:35,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:36:35,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:35,873 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:36:35,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:36:35,898 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:36:35,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:36:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711637284] [2025-02-06 04:36:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711637284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:36,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:36,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-06 04:36:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304936755] [2025-02-06 04:36:36,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:36,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:36:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:36,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:36:36,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:36:36,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 55 [2025-02-06 04:36:36,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 151 transitions, 1229 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:36,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:36,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 55 [2025-02-06 04:36:36,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:37,908 INFO L124 PetriNetUnfolderBase]: 8939/13056 cut-off events. [2025-02-06 04:36:37,908 INFO L125 PetriNetUnfolderBase]: For 136733/136754 co-relation queries the response was YES. [2025-02-06 04:36:37,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59253 conditions, 13056 events. 8939/13056 cut-off events. For 136733/136754 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 68934 event pairs, 972 based on Foata normal form. 10/13066 useless extension candidates. Maximal degree in co-relation 59187. Up to 5071 conditions per place. [2025-02-06 04:36:37,996 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 306 selfloop transitions, 93 changer transitions 85/486 dead transitions. [2025-02-06 04:36:37,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 486 transitions, 4168 flow [2025-02-06 04:36:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 04:36:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-06 04:36:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 537 transitions. [2025-02-06 04:36:37,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32545454545454544 [2025-02-06 04:36:37,997 INFO L175 Difference]: Start difference. First operand has 160 places, 151 transitions, 1229 flow. Second operand 30 states and 537 transitions. [2025-02-06 04:36:37,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 486 transitions, 4168 flow [2025-02-06 04:36:38,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 486 transitions, 3892 flow, removed 84 selfloop flow, removed 18 redundant places. [2025-02-06 04:36:38,425 INFO L231 Difference]: Finished difference. Result has 177 places, 193 transitions, 1725 flow [2025-02-06 04:36:38,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1725, PETRI_PLACES=177, PETRI_TRANSITIONS=193} [2025-02-06 04:36:38,426 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 121 predicate places. [2025-02-06 04:36:38,426 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 193 transitions, 1725 flow [2025-02-06 04:36:38,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:38,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:38,426 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:38,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:36:38,427 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:38,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:38,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1082128320, now seen corresponding path program 3 times [2025-02-06 04:36:38,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:38,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20067987] [2025-02-06 04:36:38,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:36:38,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:38,436 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:36:38,442 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 48 of 49 statements. [2025-02-06 04:36:38,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:36:38,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:38,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20067987] [2025-02-06 04:36:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20067987] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:38,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:38,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-06 04:36:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513909152] [2025-02-06 04:36:38,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:38,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:36:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:38,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:36:38,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:36:38,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 55 [2025-02-06 04:36:38,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 193 transitions, 1725 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:38,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:38,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 55 [2025-02-06 04:36:38,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:41,212 INFO L124 PetriNetUnfolderBase]: 10908/15927 cut-off events. [2025-02-06 04:36:41,213 INFO L125 PetriNetUnfolderBase]: For 243290/243311 co-relation queries the response was YES. [2025-02-06 04:36:41,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84074 conditions, 15927 events. 10908/15927 cut-off events. For 243290/243311 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 87490 event pairs, 1865 based on Foata normal form. 10/15937 useless extension candidates. Maximal degree in co-relation 83981. Up to 7699 conditions per place. [2025-02-06 04:36:41,336 INFO L140 encePairwiseOnDemand]: 37/55 looper letters, 321 selfloop transitions, 127 changer transitions 87/537 dead transitions. [2025-02-06 04:36:41,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 537 transitions, 5342 flow [2025-02-06 04:36:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-06 04:36:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-02-06 04:36:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 589 transitions. [2025-02-06 04:36:41,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29747474747474745 [2025-02-06 04:36:41,339 INFO L175 Difference]: Start difference. First operand has 177 places, 193 transitions, 1725 flow. Second operand 36 states and 589 transitions. [2025-02-06 04:36:41,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 537 transitions, 5342 flow [2025-02-06 04:36:42,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 537 transitions, 4941 flow, removed 160 selfloop flow, removed 16 redundant places. [2025-02-06 04:36:42,133 INFO L231 Difference]: Finished difference. Result has 205 places, 235 transitions, 2380 flow [2025-02-06 04:36:42,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2380, PETRI_PLACES=205, PETRI_TRANSITIONS=235} [2025-02-06 04:36:42,134 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 149 predicate places. [2025-02-06 04:36:42,134 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 235 transitions, 2380 flow [2025-02-06 04:36:42,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:42,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:42,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:42,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:36:42,135 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:42,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:42,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1385548776, now seen corresponding path program 4 times [2025-02-06 04:36:42,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:42,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917624157] [2025-02-06 04:36:42,138 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:36:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:42,149 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:36:42,160 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:36:42,160 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:36:42,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:42,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917624157] [2025-02-06 04:36:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917624157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:42,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:42,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-06 04:36:42,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312962461] [2025-02-06 04:36:42,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:42,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:36:42,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:42,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:36:42,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:36:42,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 55 [2025-02-06 04:36:42,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 235 transitions, 2380 flow. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:42,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:42,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 55 [2025-02-06 04:36:42,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:45,783 INFO L124 PetriNetUnfolderBase]: 14852/21643 cut-off events. [2025-02-06 04:36:45,784 INFO L125 PetriNetUnfolderBase]: For 412610/412631 co-relation queries the response was YES. [2025-02-06 04:36:45,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123313 conditions, 21643 events. 14852/21643 cut-off events. For 412610/412631 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 125094 event pairs, 1635 based on Foata normal form. 15/21486 useless extension candidates. Maximal degree in co-relation 123216. Up to 8693 conditions per place. [2025-02-06 04:36:45,926 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 353 selfloop transitions, 208 changer transitions 192/755 dead transitions. [2025-02-06 04:36:45,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 755 transitions, 8453 flow [2025-02-06 04:36:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-06 04:36:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-06 04:36:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 678 transitions. [2025-02-06 04:36:45,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2801652892561983 [2025-02-06 04:36:45,928 INFO L175 Difference]: Start difference. First operand has 205 places, 235 transitions, 2380 flow. Second operand 44 states and 678 transitions. [2025-02-06 04:36:45,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 755 transitions, 8453 flow [2025-02-06 04:36:47,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 755 transitions, 7870 flow, removed 204 selfloop flow, removed 21 redundant places. [2025-02-06 04:36:47,221 INFO L231 Difference]: Finished difference. Result has 239 places, 336 transitions, 4103 flow [2025-02-06 04:36:47,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4103, PETRI_PLACES=239, PETRI_TRANSITIONS=336} [2025-02-06 04:36:47,222 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 183 predicate places. [2025-02-06 04:36:47,222 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 336 transitions, 4103 flow [2025-02-06 04:36:47,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:47,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:47,222 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:47,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:36:47,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:47,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash -982780672, now seen corresponding path program 5 times [2025-02-06 04:36:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037226340] [2025-02-06 04:36:47,223 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:36:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:47,229 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:36:47,234 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:36:47,234 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:36:47,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:47,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037226340] [2025-02-06 04:36:47,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037226340] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:36:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414351930] [2025-02-06 04:36:47,400 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:36:47,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:36:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:36:47,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:36:47,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:36:47,451 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:36:47,478 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:36:47,479 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:36:47,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:47,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 04:36:47,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:36:47,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 04:36:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:47,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:36:47,795 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 04:36:47,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 04:36:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414351930] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:36:47,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:36:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 25 [2025-02-06 04:36:47,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014927891] [2025-02-06 04:36:47,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:36:47,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 04:36:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:47,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 04:36:47,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2025-02-06 04:36:47,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 55 [2025-02-06 04:36:47,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 336 transitions, 4103 flow. Second operand has 25 states, 25 states have (on average 9.24) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:47,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:47,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 55 [2025-02-06 04:36:47,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:36:53,907 INFO L124 PetriNetUnfolderBase]: 18546/27216 cut-off events. [2025-02-06 04:36:53,907 INFO L125 PetriNetUnfolderBase]: For 678728/678749 co-relation queries the response was YES. [2025-02-06 04:36:54,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161663 conditions, 27216 events. 18546/27216 cut-off events. For 678728/678749 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 167764 event pairs, 1068 based on Foata normal form. 18/27105 useless extension candidates. Maximal degree in co-relation 161559. Up to 10624 conditions per place. [2025-02-06 04:36:54,233 INFO L140 encePairwiseOnDemand]: 32/55 looper letters, 599 selfloop transitions, 317 changer transitions 151/1069 dead transitions. [2025-02-06 04:36:54,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1069 transitions, 13559 flow [2025-02-06 04:36:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-02-06 04:36:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2025-02-06 04:36:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 847 transitions. [2025-02-06 04:36:54,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2655172413793103 [2025-02-06 04:36:54,239 INFO L175 Difference]: Start difference. First operand has 239 places, 336 transitions, 4103 flow. Second operand 58 states and 847 transitions. [2025-02-06 04:36:54,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1069 transitions, 13559 flow [2025-02-06 04:36:58,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1069 transitions, 12242 flow, removed 512 selfloop flow, removed 24 redundant places. [2025-02-06 04:36:58,789 INFO L231 Difference]: Finished difference. Result has 292 places, 553 transitions, 7571 flow [2025-02-06 04:36:58,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3604, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=7571, PETRI_PLACES=292, PETRI_TRANSITIONS=553} [2025-02-06 04:36:58,790 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 236 predicate places. [2025-02-06 04:36:58,790 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 553 transitions, 7571 flow [2025-02-06 04:36:58,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.24) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:58,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:36:58,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:36:58,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 04:36:58,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 04:36:58,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:36:58,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:36:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1994090542, now seen corresponding path program 6 times [2025-02-06 04:36:58,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:36:58,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876247254] [2025-02-06 04:36:58,995 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:36:58,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:36:59,002 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 49 statements into 2 equivalence classes. [2025-02-06 04:36:59,010 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 48 of 49 statements. [2025-02-06 04:36:59,010 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:36:59,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:36:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:36:59,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:36:59,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876247254] [2025-02-06 04:36:59,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876247254] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:36:59,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:36:59,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-06 04:36:59,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137966629] [2025-02-06 04:36:59,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:36:59,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:36:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:36:59,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:36:59,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:36:59,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 55 [2025-02-06 04:36:59,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 553 transitions, 7571 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:36:59,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:36:59,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 55 [2025-02-06 04:36:59,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:03,833 INFO L124 PetriNetUnfolderBase]: 16505/24446 cut-off events. [2025-02-06 04:37:03,833 INFO L125 PetriNetUnfolderBase]: For 608258/608279 co-relation queries the response was YES. [2025-02-06 04:37:04,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156365 conditions, 24446 events. 16505/24446 cut-off events. For 608258/608279 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 150781 event pairs, 1889 based on Foata normal form. 9/24335 useless extension candidates. Maximal degree in co-relation 156245. Up to 15268 conditions per place. [2025-02-06 04:37:04,181 INFO L140 encePairwiseOnDemand]: 37/55 looper letters, 497 selfloop transitions, 236 changer transitions 62/797 dead transitions. [2025-02-06 04:37:04,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 797 transitions, 11494 flow [2025-02-06 04:37:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 04:37:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-06 04:37:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 423 transitions. [2025-02-06 04:37:04,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2958041958041958 [2025-02-06 04:37:04,184 INFO L175 Difference]: Start difference. First operand has 292 places, 553 transitions, 7571 flow. Second operand 26 states and 423 transitions. [2025-02-06 04:37:04,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 797 transitions, 11494 flow [2025-02-06 04:37:09,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 797 transitions, 11009 flow, removed 178 selfloop flow, removed 19 redundant places. [2025-02-06 04:37:09,024 INFO L231 Difference]: Finished difference. Result has 297 places, 582 transitions, 8370 flow [2025-02-06 04:37:09,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8370, PETRI_PLACES=297, PETRI_TRANSITIONS=582} [2025-02-06 04:37:09,025 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 241 predicate places. [2025-02-06 04:37:09,025 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 582 transitions, 8370 flow [2025-02-06 04:37:09,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:09,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:09,025 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:09,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:37:09,025 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:37:09,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1654479116, now seen corresponding path program 7 times [2025-02-06 04:37:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998599211] [2025-02-06 04:37:09,026 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:37:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:09,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:09,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:09,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:09,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:37:09,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998599211] [2025-02-06 04:37:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998599211] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:37:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950649824] [2025-02-06 04:37:09,213 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:37:09,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:37:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:37:09,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:37:09,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:37:09,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:37:09,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:37:09,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:09,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:09,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 04:37:09,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:37:09,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 04:37:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:37:09,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:37:09,503 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 04:37:09,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 9 [2025-02-06 04:37:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:37:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950649824] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:37:09,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:37:09,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 20 [2025-02-06 04:37:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983380506] [2025-02-06 04:37:09,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:37:09,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:37:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:09,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:37:09,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:37:09,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 55 [2025-02-06 04:37:09,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 582 transitions, 8370 flow. Second operand has 20 states, 20 states have (on average 9.35) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:09,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:09,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 55 [2025-02-06 04:37:09,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:16,093 INFO L124 PetriNetUnfolderBase]: 19072/28306 cut-off events. [2025-02-06 04:37:16,093 INFO L125 PetriNetUnfolderBase]: For 683186/683207 co-relation queries the response was YES. [2025-02-06 04:37:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179695 conditions, 28306 events. 19072/28306 cut-off events. For 683186/683207 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 178925 event pairs, 1077 based on Foata normal form. 10/28192 useless extension candidates. Maximal degree in co-relation 179579. Up to 9189 conditions per place. [2025-02-06 04:37:16,454 INFO L140 encePairwiseOnDemand]: 36/55 looper letters, 704 selfloop transitions, 644 changer transitions 150/1500 dead transitions. [2025-02-06 04:37:16,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1500 transitions, 21611 flow [2025-02-06 04:37:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-02-06 04:37:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2025-02-06 04:37:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 1073 transitions. [2025-02-06 04:37:16,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24386363636363637 [2025-02-06 04:37:16,461 INFO L175 Difference]: Start difference. First operand has 297 places, 582 transitions, 8370 flow. Second operand 80 states and 1073 transitions. [2025-02-06 04:37:16,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 1500 transitions, 21611 flow [2025-02-06 04:37:21,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1500 transitions, 21053 flow, removed 147 selfloop flow, removed 19 redundant places. [2025-02-06 04:37:21,546 INFO L231 Difference]: Finished difference. Result has 375 places, 900 transitions, 14485 flow [2025-02-06 04:37:21,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=8109, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=14485, PETRI_PLACES=375, PETRI_TRANSITIONS=900} [2025-02-06 04:37:21,547 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 319 predicate places. [2025-02-06 04:37:21,547 INFO L471 AbstractCegarLoop]: Abstraction has has 375 places, 900 transitions, 14485 flow [2025-02-06 04:37:21,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.35) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:21,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:21,548 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:21,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:37:21,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:37:21,752 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:37:21,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 174959184, now seen corresponding path program 2 times [2025-02-06 04:37:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:21,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830228750] [2025-02-06 04:37:21,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:37:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:21,763 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 52 statements into 2 equivalence classes. [2025-02-06 04:37:21,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 48 of 52 statements. [2025-02-06 04:37:21,780 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:37:21,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:37:22,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830228750] [2025-02-06 04:37:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830228750] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:22,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:22,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-06 04:37:22,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450060311] [2025-02-06 04:37:22,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:22,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:37:22,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:22,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:37:22,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:37:22,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 55 [2025-02-06 04:37:22,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 900 transitions, 14485 flow. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:22,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:22,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 55 [2025-02-06 04:37:22,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:28,694 INFO L124 PetriNetUnfolderBase]: 21133/31496 cut-off events. [2025-02-06 04:37:28,694 INFO L125 PetriNetUnfolderBase]: For 1021947/1022048 co-relation queries the response was YES. [2025-02-06 04:37:29,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226392 conditions, 31496 events. 21133/31496 cut-off events. For 1021947/1022048 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 204406 event pairs, 1598 based on Foata normal form. 56/31520 useless extension candidates. Maximal degree in co-relation 226259. Up to 21350 conditions per place. [2025-02-06 04:37:29,448 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 871 selfloop transitions, 281 changer transitions 71/1235 dead transitions. [2025-02-06 04:37:29,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1235 transitions, 21036 flow [2025-02-06 04:37:29,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 04:37:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 04:37:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 414 transitions. [2025-02-06 04:37:29,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2025-02-06 04:37:29,450 INFO L175 Difference]: Start difference. First operand has 375 places, 900 transitions, 14485 flow. Second operand 23 states and 414 transitions. [2025-02-06 04:37:29,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1235 transitions, 21036 flow [2025-02-06 04:37:40,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1235 transitions, 19368 flow, removed 695 selfloop flow, removed 20 redundant places. [2025-02-06 04:37:40,679 INFO L231 Difference]: Finished difference. Result has 373 places, 969 transitions, 15237 flow [2025-02-06 04:37:40,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=13348, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=15237, PETRI_PLACES=373, PETRI_TRANSITIONS=969} [2025-02-06 04:37:40,680 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 317 predicate places. [2025-02-06 04:37:40,680 INFO L471 AbstractCegarLoop]: Abstraction has has 373 places, 969 transitions, 15237 flow [2025-02-06 04:37:40,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:40,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:40,680 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:40,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:37:40,680 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:37:40,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:40,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1489815906, now seen corresponding path program 3 times [2025-02-06 04:37:40,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:40,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238771512] [2025-02-06 04:37:40,681 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:37:40,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:40,690 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 3 equivalence classes. [2025-02-06 04:37:40,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 43 of 52 statements. [2025-02-06 04:37:40,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:37:40,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 04:37:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:40,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238771512] [2025-02-06 04:37:40,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238771512] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:40,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:40,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:37:40,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331253344] [2025-02-06 04:37:40,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:40,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:37:40,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:40,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:37:40,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:37:40,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2025-02-06 04:37:40,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 969 transitions, 15237 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:40,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:40,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2025-02-06 04:37:40,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:45,535 INFO L124 PetriNetUnfolderBase]: 15814/23778 cut-off events. [2025-02-06 04:37:45,536 INFO L125 PetriNetUnfolderBase]: For 556237/556265 co-relation queries the response was YES. [2025-02-06 04:37:45,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154304 conditions, 23778 events. 15814/23778 cut-off events. For 556237/556265 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 150098 event pairs, 1642 based on Foata normal form. 293/24058 useless extension candidates. Maximal degree in co-relation 154175. Up to 18276 conditions per place. [2025-02-06 04:37:45,846 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 768 selfloop transitions, 133 changer transitions 0/924 dead transitions. [2025-02-06 04:37:45,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 924 transitions, 16499 flow [2025-02-06 04:37:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:37:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:37:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2025-02-06 04:37:45,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2025-02-06 04:37:45,847 INFO L175 Difference]: Start difference. First operand has 373 places, 969 transitions, 15237 flow. Second operand 8 states and 167 transitions. [2025-02-06 04:37:45,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 924 transitions, 16499 flow [2025-02-06 04:37:50,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 924 transitions, 16039 flow, removed 71 selfloop flow, removed 13 redundant places. [2025-02-06 04:37:50,419 INFO L231 Difference]: Finished difference. Result has 357 places, 839 transitions, 13344 flow [2025-02-06 04:37:50,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=12904, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13344, PETRI_PLACES=357, PETRI_TRANSITIONS=839} [2025-02-06 04:37:50,420 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 301 predicate places. [2025-02-06 04:37:50,420 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 839 transitions, 13344 flow [2025-02-06 04:37:50,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:50,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:50,421 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:50,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 04:37:50,421 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:37:50,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash 272055541, now seen corresponding path program 8 times [2025-02-06 04:37:50,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:50,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666264229] [2025-02-06 04:37:50,421 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:37:50,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:50,431 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 04:37:50,452 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 04:37:50,452 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:37:50,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:37:50,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666264229] [2025-02-06 04:37:50,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666264229] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:37:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423675423] [2025-02-06 04:37:50,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:37:50,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:37:50,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:37:50,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:37:50,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:37:50,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 04:37:50,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 04:37:50,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:37:50,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:50,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:37:50,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:37:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:37:50,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:37:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:37:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423675423] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:37:50,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:37:50,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-06 04:37:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329011848] [2025-02-06 04:37:50,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:37:50,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:37:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:50,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:37:50,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:37:50,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2025-02-06 04:37:50,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 839 transitions, 13344 flow. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:50,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:50,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2025-02-06 04:37:50,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:56,508 INFO L124 PetriNetUnfolderBase]: 20517/30958 cut-off events. [2025-02-06 04:37:56,508 INFO L125 PetriNetUnfolderBase]: For 751224/751257 co-relation queries the response was YES. [2025-02-06 04:37:56,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201862 conditions, 30958 events. 20517/30958 cut-off events. For 751224/751257 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 205885 event pairs, 845 based on Foata normal form. 105/31037 useless extension candidates. Maximal degree in co-relation 201694. Up to 8464 conditions per place. [2025-02-06 04:37:56,977 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 1081 selfloop transitions, 164 changer transitions 144/1420 dead transitions. [2025-02-06 04:37:56,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1420 transitions, 24825 flow [2025-02-06 04:37:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:37:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:37:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 313 transitions. [2025-02-06 04:37:56,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3793939393939394 [2025-02-06 04:37:56,982 INFO L175 Difference]: Start difference. First operand has 357 places, 839 transitions, 13344 flow. Second operand 15 states and 313 transitions. [2025-02-06 04:37:56,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1420 transitions, 24825 flow